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111 lines
4.2 KiB
C++
111 lines
4.2 KiB
C++
// Copyright (c) 2005, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// ---
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// Author: Sanjay Ghemawat
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//
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// Produce stack trace.
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//
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// There are three different ways we can try to get the stack trace:
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//
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// 1) Our hand-coded stack-unwinder. This depends on a certain stack
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// layout, which is used by gcc (and those systems using a
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// gcc-compatible ABI) on x86 systems, at least since gcc 2.95.
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// It uses the frame pointer to do its work.
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//
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// 2) The libunwind library. This is still in development, and as a
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// separate library adds a new dependency, abut doesn't need a frame
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// pointer. It also doesn't call malloc.
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//
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// 3) The gdb unwinder -- also the one used by the c++ exception code.
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// It's obviously well-tested, but has a fatal flaw: it can call
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// malloc() from the unwinder. This is a problem because we're
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// trying to use the unwinder to instrument malloc().
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//
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// Note: if you add a new implementation here, make sure it works
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// correctly when GetStackTrace() is called with max_depth == 0.
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// Some code may do that.
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#include <config.h>
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#include <gperftools/stacktrace.h>
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#include "stacktrace_config.h"
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#if defined(STACKTRACE_INL_HEADER)
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#define IS_STACK_FRAMES 0
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#define IS_WITH_CONTEXT 0
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#define GET_STACK_TRACE_OR_FRAMES \
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GetStackTrace(void **result, int max_depth, int skip_count)
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#include STACKTRACE_INL_HEADER
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#undef IS_STACK_FRAMES
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#undef IS_WITH_CONTEXT
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#undef GET_STACK_TRACE_OR_FRAMES
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#define IS_STACK_FRAMES 1
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#define IS_WITH_CONTEXT 0
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#define GET_STACK_TRACE_OR_FRAMES \
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GetStackFrames(void **result, int *sizes, int max_depth, int skip_count)
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#include STACKTRACE_INL_HEADER
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#undef IS_STACK_FRAMES
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#undef IS_WITH_CONTEXT
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#undef GET_STACK_TRACE_OR_FRAMES
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#define IS_STACK_FRAMES 0
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#define IS_WITH_CONTEXT 1
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#define GET_STACK_TRACE_OR_FRAMES \
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GetStackTraceWithContext(void **result, int max_depth, \
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int skip_count, const void *ucp)
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#include STACKTRACE_INL_HEADER
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#undef IS_STACK_FRAMES
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#undef IS_WITH_CONTEXT
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#undef GET_STACK_TRACE_OR_FRAMES
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#define IS_STACK_FRAMES 1
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#define IS_WITH_CONTEXT 1
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#define GET_STACK_TRACE_OR_FRAMES \
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GetStackFramesWithContext(void **result, int *sizes, int max_depth, \
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int skip_count, const void *ucp)
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#include STACKTRACE_INL_HEADER
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#undef IS_STACK_FRAMES
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#undef IS_WITH_CONTEXT
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#undef GET_STACK_TRACE_OR_FRAMES
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#elif 0
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// This is for the benefit of code analysis tools that may have
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// trouble with the computed #include above.
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# include "stacktrace_x86-inl.h"
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# include "stacktrace_libunwind-inl.h"
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# include "stacktrace_generic-inl.h"
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# include "stacktrace_powerpc-inl.h"
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# include "stacktrace_win32-inl.h"
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# include "stacktrace_arm-inl.h"
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#else
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# error Cannot calculate stack trace: will need to write for your environment
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#endif
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